<header>Internet hostname of this mail system</header>

<center><tt>myhostname</tt></center>
<hr>

This parameter specifies the internet hostname of this mail system. The default
is to use the fully-qualified domain name from <tt>gethostname()</tt>.

<p>

<tt>$myhostname</tt> is used as a default value for many other configuration
parameters.


<hr>
